JPS5983238A - Position detector - Google Patents

Position detector

Info

Publication number
JPS5983238A
JPS5983238A JP19370782A JP19370782A JPS5983238A JP S5983238 A JPS5983238 A JP S5983238A JP 19370782 A JP19370782 A JP 19370782A JP 19370782 A JP19370782 A JP 19370782A JP S5983238 A JPS5983238 A JP S5983238A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
magnetic flux
position
detecting means
pass filter
band pass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19370782A
Inventor
Nobuo Kitamura
Akio Sakano
Kunio Shikakura
Eiji Tamaru
Kimiyoshi Yoshida
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means

Abstract

PURPOSE: To detect accurately a position, by taking out the output signal of a magnetic flux detecting means through a band pass filter to eliminate the influence of external magnetic fields such as a deflecting magnetic field of a cathode-ray tube.
CONSTITUTION: Components, which are vertical to the plane of a position detecting plate 10, of the magnetic flux generated by flowing of a current to conductors X1, X2WXnW or Y1, Y2WYmW are detected by a magnetic flux detecting means 30. An output signal SS of the detecting means 30 is supplied to a band pass filter 51, and signal components of a low frequency due to the magnetic flux of external magnetic fields are eliminated during the horizontal scanning period of a jointly used cathode-ray tube. Therefore, only signal components of a high frequency which are generated by flowing of the current to conductors of the position detecting plate are obtained. Counting is performed from the time, when a certain current flows to the outermost conductor, to the time when the output of the band pass filter 51 crosses first a prescribed level in a prescribed direction. A position in the arrangement direction of plural conductors on the position detecting plate 10 of the magnetic flux detecting means 30 is detected by this counted data.
COPYRIGHT: (C)1984,JPO&Japio
JP19370782A 1982-11-04 1982-11-04 Position detector Pending JPS5983238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19370782A JPS5983238A (en) 1982-11-04 1982-11-04 Position detector

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP19370782A JPS5983238A (en) 1982-11-04 1982-11-04 Position detector
CA 439478 CA1229442A (en) 1982-11-04 1983-10-21 Coordinate position digitizing system
US06547385 US4728944A (en) 1982-11-04 1983-10-31 Coordinate position digitizing system
GB8329385A GB2131955B (en) 1982-11-04 1983-11-03 Coordinate position digitizing systems

Publications (1)

Publication Number Publication Date
JPS5983238A true true JPS5983238A (en) 1984-05-14

Family

ID=16312444

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19370782A Pending JPS5983238A (en) 1982-11-04 1982-11-04 Position detector

Country Status (4)

Country Link
US (1) US4728944A (en)
JP (1) JPS5983238A (en)
CA (1) CA1229442A (en)
GB (1) GB2131955B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6115226A (en) * 1984-06-30 1986-01-23 Kodama Seisakusho:Kk Drawing board of digitizer and its production
US5367255A (en) * 1991-12-02 1994-11-22 Mts System Corp Magnetostrictive position transducer with band passed mode converter output for rejecting mechanical noise
WO2016000369A1 (en) * 2014-07-04 2016-01-07 京东方科技集团股份有限公司 Transmit electrode scanning circuit, array substrate and display device

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436640A1 (en) * 1984-10-05 1986-04-10 Kontron Elektronik Current supply circuit for a digitizer
US4837716A (en) * 1987-07-24 1989-06-06 Chia Hui Lin Twin-rate charging and discharging proportional type cursor position determining device
US5136125A (en) * 1991-05-06 1992-08-04 International Business Machines Corporation Sensor grid for an electromagnetic digitizer tablet
US5373117A (en) * 1992-08-10 1994-12-13 Ncr Corporation Method for reducing errors in a digitizer
GB9219918D0 (en) * 1992-09-21 1992-11-04 Vernon Gauging Systems Limited Position recognition apparatus
US5902967A (en) * 1996-02-09 1999-05-11 Lsi Logic Corporation Method and apparatus for eliminating an offset signal in an electrostatic digitizing tablet
US6396005B2 (en) 1998-06-15 2002-05-28 Rodgers Technology Center, Inc. Method and apparatus for diminishing grid complexity in a tablet
JP4004799B2 (en) * 2002-01-09 2007-11-07 株式会社ワコム Current supplying circuit to the sensor coil of the coordinate input device
JP5098042B2 (en) * 2008-02-13 2012-12-12 株式会社ワコム Position detection apparatus and a position detection method

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189889A (en) * 1962-01-02 1965-06-15 Image Instr Inc System for modifying stored data
US3728480A (en) * 1969-03-18 1973-04-17 Sanders Associates Inc Television gaming and training apparatus
US3873770A (en) * 1974-03-21 1975-03-25 Bendix Corp Digital position measurement system with stylus tilt error compensation
US4088842A (en) * 1975-05-23 1978-05-09 Kabushiki Kaisha Daini Seikosha Automatic coordinate determining device
US4022971A (en) * 1975-07-31 1977-05-10 Talos Systems, Inc. Method and apparatus for converting the location and movement of a manually controlled instrument into corresponding electrical signals
US4093947A (en) * 1976-12-30 1978-06-06 Phillips Petroleum Company Raster display position detection
GB1601806A (en) * 1977-05-31 1981-11-04 Nippon Telegraph & Telephone Tablet input devices
FR2412997B1 (en) * 1977-12-21 1983-03-18 Telediffusion Fse
US4206314A (en) * 1978-08-14 1980-06-03 Gtco Corporation Graphic digitizer
US4591841A (en) * 1983-11-01 1986-05-27 Wisconsin Alumni Research Foundation Long range optical pointing for video screens

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6115226A (en) * 1984-06-30 1986-01-23 Kodama Seisakusho:Kk Drawing board of digitizer and its production
US5367255A (en) * 1991-12-02 1994-11-22 Mts System Corp Magnetostrictive position transducer with band passed mode converter output for rejecting mechanical noise
WO2016000369A1 (en) * 2014-07-04 2016-01-07 京东方科技集团股份有限公司 Transmit electrode scanning circuit, array substrate and display device
US9922589B2 (en) 2014-07-04 2018-03-20 Boe Technology Group Co., Ltd. Emission electrode scanning circuit, array substrate and display apparatus

Also Published As

Publication number Publication date Type
GB2131955A (en) 1984-06-27 application
GB8329385D0 (en) 1983-12-07 grant
CA1229442A (en) 1987-11-17 grant
US4728944A (en) 1988-03-01 grant
CA1229442A1 (en) grant
GB2131955B (en) 1986-05-29 grant

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